Abstract: Using the records of the seven San Francisco Bay Area counties that surround University of California, Berkeley and Stanford University, we conducted a systematic and thorough study of the party registration of the Berkeley and Stanford faculty in 23 academic departments. The departments span the social sciences, humanities, hard sciences, math, law, journalism, engineering, medicine, and the business school. Of the total of 1497 individual names on the cumulative list, we obtained readings on 1005, or 67 percent. The findings support the “one-party campus” conjecture. For UC-Berkeley, we found an overall Democrat:Republican ratio of 9.9:1. For Stanford, we found an overall D:R ratio of 7.6:1. Moreover, the breakdown by faculty rank shows that Republicans are an “endangered species” on the two campuses. This article contains a link to the complete data (with individual identities redacted).